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120223131 = 376193851
BaseRepresentation
bin1110010101001…
…11010110011011
322101012222010120
413022213112123
5221234120011
615532444323
72656610520
oct712472633
9271188116
10120223131
1161954466
12343196a3
131bba4662
1411d77147
15a84ba06
hex72a759b

120223131 has 16 divisors (see below), whose sum is σ = 186202368. Its totient is φ = 67572000.

The previous prime is 120223123. The next prime is 120223151. The reversal of 120223131 is 131322021.

It is not a de Polignac number, because 120223131 - 23 = 120223123 is a prime.

It is a super-2 number, since 2×1202231312 = 28907202454886322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120223131.

It is not an unprimeable number, because it can be changed into a prime (120223151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45645 + ... + 48206.

It is an arithmetic number, because the mean of its divisors is an integer number (11637648).

Almost surely, 2120223131 is an apocalyptic number.

120223131 is a deficient number, since it is larger than the sum of its proper divisors (65979237).

120223131 is an equidigital number, since it uses as much as digits as its factorization.

120223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93922.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 120223131 is about 10964.6309103408. The cubic root of 120223131 is about 493.5479413355.

Adding to 120223131 its reverse (131322021), we get a palindrome (251545152).

The spelling of 120223131 in words is "one hundred twenty million, two hundred twenty-three thousand, one hundred thirty-one".

Divisors: 1 3 7 21 61 183 427 1281 93851 281553 656957 1970871 5724911 17174733 40074377 120223131